Pump-anchor.



U. L. WOOD.

PUMP ANCHOR.

APPLICATION FILED 00120, 1913.

LW8,58% Patented Aug. 25, 1914.

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ATTORNEY.

CLIO L. WOOD, 'OF GOAJ LINGA, CALIFORNIA.

PUMP-ANCHOR.

Specification of Letters Patent.

Patented'Aug. 25, 1914..

Application filed October 20, 1913. Serial No 796,358.

To all whom it may concern:

Be it known that I, (11.10 L. WOOD, a citizen of the United States ofAmerica, of Goalinga, county of Fresno, State of California, haveinvented a new and useful Improvement in Pump-Anchors, of which thefollowing is a description, reference being had to the accompanyingdrawings.

-This device is especially adapted for use in oil Wells. In most oilwells the pump cylinder is attached to the bottom of the suctionpipewhichextends hundreds and often several thousand feet downward inthe well. This long line of pump pipe was formerly suspended from thetop of the well,'but the great weight and jar of the pump caused thepipe to part. In falling the lower part of the pipe would frequentlybend and twist. In any event upon the parting of the pipe itis necessaryto take all the pipe and v pump out of the well and replace it, causinggreat expense and loss of'production. To avoid such parting of thepun1p'lihe,an-

' chors have been devised to support the pipe from below. These anchorsfurnish support at any desired location by jaw toothed plates swedgedagainst the side of the well casing. In the anchors heretofore devisedthese plates and swedges are operated. by

' labor.

a spring device "and cannot be re-set without removing the whole line ofpipe and the resetting of the spring device. In many wells suchoperation represents a .full days By means of the device which I haveinvented and for which I now make application for Letters Patent, theanchor can be set, released and reset at any depth in the well, at once,in a. moment of time.

Referring'to the drawings, Figure 1 is a cross-section view of theanchor with the jaw plates set against the sides of the casing; Fig. 2and Fig. 3 give detail views of the operating parts. Fig. 4 is a detailsectional view taken on the line 4-4 of Fig. 2. 1 is the well casing, 2the pump pipe or suction pipe. it

The pump cylinder is not shown but would ordinarily be located justabove the part shown in the drawing. v

3 is a notched arid slotted piece' of pipe within the pump pipe fittingsnug up and attached to it by the pin 4:.

5 is the swedge shaped body upon which the inside of the casing. Theseplates are slightly convexed to fit the inside of the well casin and areprovided with sharp teeth on tie convex surface. 5 is united to the pumppipe by the coupling 6; by means of the screw threads 7.

8 1s a groove in 5 to permit passage of oil or water. p I

10 is adove-tail groove in each jaw plate which slides'upon t e dovetail guide 11 on the swedge 5. This 'swedgealso has a shoulder. 115 oneach side to prevent the jaws slipping up too high.

, 12 and 12 are-pins which extend loosely into the jaw plates from thecollar 14 which loosely encircles the main operating rod.

13 represents slotsin 5 in'which the pins move up and down. This rod isturned down to a smallneck 16 at the point where the collar encircles itthus making a shoulder 17, on each side of the collar to hold it inplace. This is done by making this rod in two pieces 15 and 15 "anduniting them by screw threads at'thepoint where the collar encircles it.I

The pieces 22 and 22- are flat sprin s adjusted to press-firmly againstthe insi e of the casing thereby making sufiicient re sistance to tripthe operating device. 21

and 21" are the arms which 'hold the flat springs. 23, 23", 23" and 23"are screw nuts which hold the springs in place and 24 and 24 are nutswhich adjust the tension of the springs against the casing. The pin 26also helps hold the upper arm in place.

The pin 25 passes through the upper part of the operating rod, works upand down in the groove 27' and into and out of the notch 27. This grooveand notch are one continuous opening. The catching of this pin in thenotch 27 or its freedom in. the groove 27 governs and controls theoperation of the device. v In operation the swedge 5 and the jaw plates9 and 9 form the anchor and do the actual work. When the plates areraised upon the swedge the anchor is fastened to the side of the casing.When the plates are lowered with relation to the swedge they are freedfrom the casing and the dove tail guides pull them from the casing: Theobthe jaw plates 9 and 9 are spread against ject of my device is toraise and lower the jaw plates with relation to the swedge, at pleasure.

The-jaw plates are raised and lowered by the pins 12 and 12 carried inthe collar 14 which is loose upon the rod 1515 and doesnot turn with itbut is, because of the neck 16 and shoulders 17, raised and lowered withthe rod. I speakpf the rod being raised and lowered but for the purposeof description only, for in operation, the rod, the pins upon it, andthe jaw plates remain stationary (or relatively so) held so by theresistance furnished by the spring plates 22 and 22 pressing against thecas-' mg. The only part of the device which extends to the top of thewell, and by which the device can be controlled by the operator is thepump pipe to which the swedge 5 and the grooved part 3 are attached.

When the pump pipe is raised the main operating. rod ;15 -15 and the jawplates governed by.i t do not move until the bottom of the groove 27 hasreached the pin- From there on the whole apparatus.

25. rises together. Suppose it is raised'to the oint desired and thenlowered without givmg the pipe a turn, thenthe in 25 immediately risesin thegroove 2 and the rod 1515' carries the jaw plates upward andoutward against the casing, or rather the swedge 5. pressesdown andcrowds the plates out firmly against the casing, thereby anchoring thepump line to the casing of the well. But-suppose that just beforelowering the pipe, it is given a 'quarter turn,

thereby placing the notch 27 over the pin 25, then when the pipe islowered the rod 15-15 together with the jaw plates and the resistingring plates 22 -22 immediately move 0 with the swedge 5 and the swedgehas no opportunity to crowd the plates out against the casing. When thedesired depth has been reached a quarter turn of the 'pipefrom the topof the ground brings the groove 27 over the pin 25' again and the swedgeimmediately presses down and outward against the jawplates crowding'themagainst'the casing.

What I desire-to secure by Letters Patent,

1. In a pump anchor having a swedge shaped body attached to the suctionpipe of a pump, and slidable plates upon the faces of the swedge, meansfor sliding the plates upon the swedge shaped body as follows; a rodpassing freely, verticall through the center of the swedge shaped ody, aprojec' tion on the side of the upper end of said rod, means forcatching and releasing the projecting portion of said rod, a collararound the middle part of the rod, free therefrom so the rod may rotatewithout moving the collar, means upon the rod for raising and loweringsaid collar with said rod, pins extending from the collar outward intothe slidable plates and carrying the plates upon them, a well casing afriction device fixed upon the lower endof said rod, adjusted topressagainst the side of a well casing, in combination substantially asshown.

2. A pump suction pipe and pump anchor comprising a swedge shaped bodyadapted to be attached to the pumpsuctio'n pipe, said swedge shaped bodyhaving a plurality of plane faces each such face being provided with adove-tail ridge, and toothedconvex plates with dovetail grooves slidableupon the-faces of the swedge, means for sliding said plates upon thefaces of said swedge as follows: a rod extending vertically through theanchor,means extending from 3 said rod into said plates to raise andlower them as the rod is raised and lowered, flatsprings on arms.attached to the lower end of the rod, pressing against the casing of thewell, a slot and groove device near the.

top of the rod workable in connection with a pin through therod wherebythe rod is raised and lowered with the suction pipe and swedge shapedbody at the will of'the' operator.- 1

3'. A pump suction pipe and pump anchor comprising a swedge shaped bodyadapted to be attached to the pump suction pipe, said i'swedge shapedbody having a plurality of plane faces each such face being providedwith a dove-tail ridge,-toothed convex plates with dovetail groovesslidable upon the dovetail faces of the swedge, a rod passing verticallythrough the center of the swedge shaped body, a collar around said rodcarrymg pms which extend into and carry the said plates, 2. springfriction device fixed u on the lower end of. said rod, a suction pipeprovided with a continuous groove and slot, the pump suction pipe beingprovided with a bayonet slot, a pin extending laterally from the top ofsaid rod and adapted to .move vertically and to rotate laterally withinthe portions of the bayonet slot in I combination substantially asshown.

.4. In a pump suction pipe and a pump anchor having a swedge shaped bodyadapted to be attached to the suction pipe, said swedge shaped bodyhaving a plurahty of plane faces', slidable plates upon the faces of theswedge, means "for sliding the swedge upon theplates as follows-:a rodpassing freely vertically through the' center of the swedge, armsextending from said rod into said pl'atesand carryingthem up and downwith the rod, a well casing a friction ydevice upon the lower end of therod adjusted to press lightly against the side of the well casing, thepump .suction pipe being provided with a vertical oove'and a horizontalgroove opening nto the lower end mower 3 of the vertical groove, o pinextending htscribed my name in the presence of two witerally from thetop of said rod and adaptmesses.

ed to slide in the Vertical groove and to ro- CLIO L. WUOD. tote in thehorizontal groove, in combination Witnesses: 5 substantially as shownV'I'DA HANNAH,

In Witness whereof, I have hereunto sub- WILLIAM A. CONN.

